bjoernager/rust
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Move duration division out

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tiif 2024-06-08 01:21:56 +08:00
parent 9cf04b5a22
commit aa8323585c
1 changed files with 3 additions and 5 deletions
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8
src/tools/miri/src/clock.rs
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@ -39,13 +39,11 @@ impl Instant {
InstantKind::Virtual { nanoseconds },
InstantKind::Virtual { nanoseconds: earlier },
) => {
let duration = nanoseconds.saturating_sub(earlier);
// It is possible for second to overflow because u64::MAX < (u128::MAX / 1e9).
let seconds = u64::try_from(
nanoseconds.saturating_sub(earlier).saturating_div(1_000_000_000),
)
.unwrap();
let seconds = u64::try_from(duration.saturating_div(1_000_000_000)).unwrap();
// It is impossible for nanosecond to overflow because u32::MAX > 1e9.
let nanosecond = u32::try_from(nanoseconds.wrapping_rem(1_000_000_000)).unwrap();
let nanosecond = u32::try_from(duration.wrapping_rem(1_000_000_000)).unwrap();
Duration::new(seconds, nanosecond)
}
_ => panic!("all `Instant` must be of the same kind"),